JPS6060193A - Cold rolling oil - Google Patents

Abstract

PURPOSE:To provide a rolling oil for use in the cold rolling of steel sheets, which does not cause the formation of edge carbon (staining by soot deposited in the belt form at a distance of 10-20mm. inward from the coil edge), by blending an organosulfur compd. with a rolling oil contg. an ester compd. and an animal or vegetable oil as base oil. CONSTITUTION:An organosulfur compd. such as thioglycolic acid, tetramethylthiuram disulfide, thiosalicylic acid or distearyl thiodipropionate is used. 0.1- 5wt% said organosulfur compd. is blended with a rolling oil contg. a mono-, di- or tetraester compd. (e.g. 2-ethylhexyl stearate or polyethylene glycol dimer acid ester) and/or an animal or vegetable oil (refined beef tallow, lard or palm oil) as base oil.

Description

[Detailed description of the invention] This invention relates to cold rolling oil for steel sheets.

Among the rolling oils used for cold rolling, those that omit the cleaning Ta after monthly rolling and can provide a product with a clean surface that does not require annealing are particularly called milculino rolling oils. In this upper step where Leaning-1 is omitted, the rolled material is not cleaned of rolling oil, so the surface of the copper plate after annealing is 1. The first important condition is that the corrosion resistance (also called annealing resistance or mill cleanliness) is maintained well. The cause of soil deterioration in annealing properties is the adhesion to the steel plate of iron powder generated during rolling and carbon dioxide generated from the combustion atmosphere residue of rolling oil during annealing. It is considered a problem due to rolling oil performance 1-. This L-shaped steel plate surface 1+1i is stained with carphone, and the coil) 118 has carbon attached to it, making it look like a carphone.

This not only impairs the appearance of the steel plate, but also reduces the surface treatment +11, such as plating +1, texture and paintability.

Therefore, such cold-rolled steel sheets are considered defective products.
Correct) Volatile fB at low 1fli'l as a mountain base oil! Milclean rolling oil with a low saponification value is used, which is a bright mineral oil that easily produces soot-like carbon, and which has an extreme pressure agent and an oil propensity agent added thereto. However, for oil rolling using such mineral oil, whether annealing +1 is good or il￥
Since 1/1 roll is insufficient, it is possible to achieve sufficient rolling speed, rolling speed, and rolling speed of 11, and is used only for rolling thick cold-rolled steel sheets. Milclean oil is omitted in the cleaning process, has a low cost I, and has a large effect on efficiency, so it has both ilF1M quality and annealing properties, and can be used to make Milclean paper with a thinner root thickness. In addition to the development of a more efficient rolling oil, improvements are being made to the rolling and annealing technologies. That is, by improving the L drawing cleaning 11k (used in the ζ final scunto), the steel plate surface residue 1141 after rolling was improved.
There are several methods available, including a method of removing aluminum, a method of using an open annealing furnace where rolling oil is easily volatilized during annealing, and a method of using a rolling oil developed using components of aluminum river rolling oil. It is difficult to say that satisfactory results have been achieved in terms of face, costume) and appearance. imm-oriented
It is well known that it is effective to use animal and vegetable oils such as 4 fats, liver fat, and palm oil as base oils to reduce heat. It cannot be used with oil.

As mentioned above, the soot stains on the surface of a steel plate during annealing caused by rolling oil include those that cover the entire steel plate, and those that occur in a band shape within 10 to 20 mm from the coil edge, called encyclopedia.

Ensicahon hardly occurs when annealing waste that does not contain carbon monoxide is used, and even when gas containing carbon oxide is used, it does not occur if no oil is present. For this reason, it is thought that the cracked gas generated from the rolling oil mixes with the annealing scum, resulting in the precipitation of soot-like carbon when the concentration of carbon liquefied exceeds a certain level.

The present invention was developed based on the discovery that sulfur in a sulfuric compound causes the generation of such an encyclopedia. One or more esters selected from tetraesters; 2. One type of animal and vegetable oils selected from beef tallow, liver fat, and palm oil; or 3+1: a mixture of esters and vegetable oils. ;of)
1 (a high fl?l that prevents the occurrence of encyclopedia by adding an organic 7i?ε yellow compound to the rolling oil as oil)
FFR mill clean: It is intended to provide oil spreading.

During the experiment, inorganic sulfur was added to the test piece in order to prevent the precipitation of Crafite Carne Hono, or steel 11 bow element.
−? Perhaps the compound was applied, or the cracks would occur.
This is the 11th grade of junior high school. At the same time, an Etsuji car phone occurred. Based on this, in order to confirm the effect of sulfur, we conducted experiments with other sulfur-containing compounds and confirmed the effect. As a result, there is a
The present invention was completed by discovering that a sulfur compound is a sulfur compound.

The present invention aims to provide a rolling oil with good lIr lubricity and annealing property, especially the occurrence of cracking and sic-honing vJ+I-. Negative (1-no-mono-ken di-tri-te-I-ra ester or -2)/1 Animal and vegetable oils and fats such as fat, liver fat, and palm oil, or ■These esters and animal and vegetable oils and fats r1
Use a mixture of In order to improve the annealing properties of this rolling oil and prevent the occurrence of encyclopedia,
Yellow compound 0.1 to 50 weight! ,,, '36 is added.

This is intended to completely prevent encyclopedia. The amount of sulfur compound compounded is 0.1 ton! 1
Below V%, the effect of increasing the enthicphone to μ'+L (
Most of the compounds will not dissolve in the base oil if it exceeds 5.0% and 11%, and even if they do, the anti-11 effect of herring carphone is sufficient at 5% or less. , jl; beyond this is not necessary.

Various known esters can be used as the mono-, di-, and tetra-esters used in the rolling oil of the present invention, and alcohols constituting the esters include methyl alcohol, ethyl alcohol, propyl alcohol, l5O -propyl alcohol, butyl alcohol, 1
so-butyl alcohol, amyl alcohol, 1so-
Amyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, 2-ethylhexyl alcohol, nonyl alcohol, dotecyl alcohol, tritectyl alcohol, tetradecyl alcohol, penctyl alcohol, cetyl alcohol, ceryl alcohol, mericyl alcohol, l5O-stearyl alcohol, stearyl alcohol, oleyl alcohol, ter
t-Butyl alcohol, diethylene glycol, polyethylene glycol, trimethylolpropane, penquerythritol, 3-methyl penkune, ■.

3.5-) There are also lyols, and the fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, lyric acid, elaline acid, and se/ Mention may be made of hetic acid, arachidonic acid, adipic acid, succinic acid, acetate, maleic acid, fluoric acid, itaconic acid, tallow decomposition fatty acids, timer acid, and trimer acid.

In addition, as with ester, it is preferable to use refined beef tallow or edible beef tallow, which is obtained by removing various impurities from crude beef tallow, as the base oil, similar to the ester.As for the par 1 oil, refined par 1 oil or demelted palm oil can be used. Or, refined palm oil is more desirable from the viewpoint of annealing properties, and refined liver fat is also desirable.

In the present invention, it is essential to blend an organic sulfur compound, and by adding this, it is possible to improve the annealing +'l and prevent the generation of edge carbon. The organic sulfur compounds used include thioglycolic acid, dithioglycolic acid, n-l-decyl sulfide, thi-n-butyl disulfide, teI-ramethylthiuram monosulfide, tetramethylthiuram disulfide, tetramethylthiuram disulfide, and tetramethyl. Thiuram disulfide, dipentamethylenethiuram tetrasulfite.

Phenyl disulfite, hensyl disulfide, hensyl sulfite, tert-butyl sulfide, dioctadecyl cisulfite, dilauryl thiodipropionate, lauryl stearyl thiodipropionate, simiristyl thiodipropionate, dilauryl Thiodipropionate, diethylsulfur-1, -n-butylsulfone, distearyl β, β'-thiodibutylene I, -=,
+di Kakosenru, aminothiophenol, l-thioglycerol, thiosalicylic acid, O-)luenethiol, naoaninur, thiohensami I, 1,1'-unyl-2-thiourea, 4゜4'-thiohis''C3-methyl -6-terL-butylphenol), His[2-
Methyl(3-n-alkyl(C+2CI4)thiopropionyloxy)5-tert-butylphenol]
Sulfite.

Naobenzikoic acid, I. lis (2-tert-butyl-4-
Thio(2'-methyl-4'-hydroxo-5'-te
Examples include rt-butyl)phenyl-5-methyl]phenylphosphite.

] 0 Representative examples of animal and vegetable fats and oils such as mono- and tri-tetraesters, fats, liver fats, and palm oil:
Or a mixture of these esters and animal and vegetable oils and fats: (oil), rolling oil to which -1, organic sulfur compounds are added surfactants, extraction +1 improvers, thickening inhibitors, extreme pressure agents,
Even if a rust preventive agent is added in an amount of 0.5 to 20 wt. Even if it is rough, it does not impair its ability to withstand the effects of the sound, especially the sound of the encyclopedia.

Hereinafter, the present invention will be described in detail with reference to examples.

Example Next to the rolling oil having the composition shown in Table 1, Example of the present invention (N
o, 1-6), reference example (No. 7-9), comparative example (No.
, 10), the following tests were conducted. The results are shown in Table 2. Note that No. 1 and 1O are No. 1 fat-based rolling oils sold by Ili.

i1￥I l ('r property test was carried out by special chimpan test, the outline of the test is as shown in (1). The test results in Table 2 are comparative example No. 10. Su!1
was set as 1.00, and the lubricity of each individual was expressed as a score.

Therefore, the one with a higher score is IIFI smoothness or good θf.

(1) Interval l) I nol test rotational speed 1i: 200-100Orpm (Suheri 1i
22-155m/min) Load 1,000, 100-6
00 kg (Hertz monthly 2 1 1 - 6 2 kg/
mm') It Nobu'lyama'I Agriculture 1! 5% emulsion oil rolling temperature: 50°C Take 611,000-joe pieces at 100 kg intervals, and measure the rotational speed at 20 rpm intervals for each weight.
I did Ai. 'A11')■! Check the torque and check the torque.
．． The area within this limit was expressed as 100 for the comparative example, taking into account the critical speed of +A.

Annealing test 1 It was carried out by the method described in the following.

(2) 1 test specimen for annealing: Low grade J+ 8” I plate 150mmX150mmX
0.8 mm coating 1 pile 3% n-hexane solution heating, 130°CX 4 II tail annealing residue, CO2: 5%, CO: 8%.

H2O: 12%, N2nia 5%.

Annealed strip: : 680°C1 Soaking 2 :l! j 1
The annealing property was evaluated based on the degree of black band-like l'j warping that occurred in the test J1 engine part after fil annealing.

Table 2 (Notes) (1) 1ljJ lubricity is scored with the comparative example being 1.00.

(2) The annealing property symbol is as shown in C.

○ Does not generate ensicabone Δ Slightly generates ensicabone The oil exhibits a lubricating property equivalent to or better than that of commercially available beef tallow rolling oil, and by adding compounds with a higher sulfur value, it is possible to obtain good steel plate surface cleanliness without causing cracking or cracking. With Nos. 007 to 9, in which no organic sulfur compound was added, encyclopedia was generated, making it impossible to achieve the excellent annealing properties of the present invention.

71st Director of Saki Steel Co., Ltd. (Yoshio Kosugi)

Claims (1)

[Claims] 1 selected from mono, si, tri, te, and laester.
seeds or two or more esters) 1 (at least one selected from animal and vegetable fats and fats such as rolling oil, beef tallow, pork 11+r-i, par 1, and oil), (oil) rolling oil, or one or two esters selected from mono-, di-, and tetraesters; and at least one type selected from animal and vegetable oils and fats such as beef tallow, lard, and palm oil. 2. (Rolling oil consisting of oil; 2) 0.1 to 5.0% by weight of a mechanical sulfur compound is blended with a mixture of oil and fat to prevent the occurrence of ensicabone. rolling oil.